Space Communists: Olympus Mausoleum

If you want to rebuild a mausoleum for your long dead leader then its better to pick the tallest mountain in the solar system! Olympus Mons on Mars fits right in that description being 26 km high.
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To create Mars I've bought heightmap from this guy - https://www.artstation.com/artwork/XP1LlI displaced it in Zbrush and then added parts in Maya.